205235423 has 2 divisors, whose sum is σ = 205235424. Its totient is φ = 205235422.

The previous prime is 205235377. The next prime is 205235447. The reversal of 205235423 is 324532502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205235423 - 2⁸ = 205235167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205235392 and 205235401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205235483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102617711 + 102617712.

It is an arithmetic number, because the mean of its divisors is an integer number (102617712).

Almost surely, 2^205235423 is an apocalyptic number.

205235423 is a deficient number, since it is larger than the sum of its proper divisors (1).

205235423 is an equidigital number, since it uses as much as digits as its factorization.

205235423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 205235423 is about 14326.0400320535. The cubic root of 205235423 is about 589.8624815949.

Adding to 205235423 its reverse (324532502), we get a palindrome (529767925).

The spelling of 205235423 in words is "two hundred five million, two hundred thirty-five thousand, four hundred twenty-three".